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A. J. MACY AU'IV'OATIC SAFETY LOCK FOR VAULT AND SAFE DQQRS Filed March29, 1922 Patented Sept. 1, 192,5.

UNITED STATES PATENT OFFlcle..v

ALFRED I. MACY, OF CHICAGO, ILLINOIS, AssIGNOR, ist!` MEsNEAssIGNMENTs,To PRO. TEX LABORATORIES, INC., OF CHICAGO, ILLINOIS, A CORPORATION orILLL NOIS.

AUTOMATIC SARE'IY LOCK FOR `vAUIxI ANI)k SARE DOORS.

Application ined March 29, 1922. sriai'No'. 547,615.

To all whom t may concern.'

Be it known that I, ALFRED J. MACY, a citizen of the United States, anda resident of the city of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements in anAutomatic Safety Lock for Vault and Safe Doors; and I do hereby declarethat the fol- ,f lowing is a full, clear, and exact description of thesaine, reference being had to the accompanying drawings, and to thenumerals of reference marked thereon, which form a part oftliisspeciiication.

This invention relates to an auxiliary'lock for safes and vaults whichis designed to l stalled thereon. f

function if ,the regular look should be unlawfully tampered with.

An important obj ect of this invention is to foil a burglar by utilizingany action in tampering with the usual combination, time, or

cylinder lock, to throw, an automaticv emergency lock into lockingposition toA prevent retraction ofthedoor bolts. r

A further object of this invention is to provide such a lock which isadapted to-b'e iitted to vaults and safes nowin existence so that anyowneror user can install-this safety device to further protect thecontents of said vault or safe against unauthorized persons. I

A furtherobject of this invention is to allow placing the device invarious 'locations in different installations so that even if theburglar knows ofthe existence of this emer-v gency lock he cannot reachthe same by drilling through the door because nothingon the outside ofthe door shows where said device is installed, and with said deviceahole would have to be located within small limits to enable anyone torelease said lock.

A further Objectis to construct such a device in such a way as to litvdoors of various widths and constructions without requiring specialparts for each installation.

A further object `to be obtainedhin the construction "of thisdevice isto make it of.

standard parts or elements to avoid expensivespecial machine work of anysort.

An object consists informing the bottom 'more fully described.

of the gravityl actuated member .to prevent its lodging on someobstruction in its downward path, theV point thereon causing theweightto fall off such Obstruction and thus? complete its function.

Other and further important objects ofr this invention will be apparentYfrom the dis# closures in the specification and the accompanyingdrawings.

The invention (in a preferred form) is illustrated in the drawings andthereinafter O n the drawings; Figure l showsa rear elevation vof avault door with the deviceof,y this inventionv in- Figure 2 is anenlarged fragmentary ele-l vation of the device shownin' Figure l withthe component parts clearly shown. f'

Figure 3 vis a section on the line-3-`3y of Figure 2. Y Y

Figure 4 is an enlarged section on the line 4 4 of Figure 2.

Figure 5 is asection Figure 4. f d -v Figure y6 is an enlarged section,with a part in elevation, along line 6-6 of Figure 2. Y v

As shown on the drawings:

A description of thev device as installed in an ordinary vault follows,it being understoodlv that the invention is not limited to the vaultconstruction described and that said device may -be'built-'in a varietyof ways suited to otherl dooi` constructions.

In the diagramitfiaticviewl of the vrear of the vault door shown inFigure l, the numeral 1 refers to a plate used as the front andprincipal part of the door, with a frame Or casing 2 fastened to thesame to hold the bolts 3 which lock the door by sliding into holes inthe walls ofthedooropenin'g.. The several bolts 3 are clamped'or boltedtogether by bars 4"so.a s to slide as one piece whenthe doorfhandle (notshown) lis moved. In the usual construction of Avault doors the bars arelocked in extended position by. some form' of tumbler, combination',`cylinder, time, or similar lock 5. It is to be under along the line 5 5of Y stood that the above described construction of the door isimmaterial to applicants invention, the description being inserted torender clear the application of said invention to one particular form ofdoor.

A device embodying the present invention is shown in detail in Figures 2-to 6 inclusive, where a weight 6 is hung from an internally threadedreel or nut 7 by a ribbon or cord A8 -of some suitable material which iswound on vsaid reel with theinner end of said ribbon or cord fastenedYto said reel.

The reel is rotatably 'mounted on a threaded shaft 9 which is slidablybut not rotatably supported by tubes l0 and 10, and which are secured toa plate or bracket 11. rlhe tube lOf-is preferably just long enough tocontain the threaded shaft 9and the end of a coupling l2 to connect tofurther lengths of tubing 13 to span the space between first lengthoftubing and the frame 2 in connection with an `ordinary nut lll mountedon `a threaded adjusting shaft l5. The edge of the plate ll nearest theswinging end of the door vis provided with two inserted hardened points16 as shown in the enlarged view in Figure 6, and the end of theadjusting shaft l5 is also provided withv two of these points 116. `Theobject of said points 1'6 is to hold the assembly in place on the doorby being forced into the frame 2 by the tightening nut le against thelast piece of tubing 13.

' The adjusting shaft l5 is made long enough so that in connection withtwo or three different lengths of stock tubing the device can be fittedto varying widths of doorslwithout requiring special machine work foreach particular installation. y

ln the openzI pos-itionthe weight 6 isheld up by a trigger 17 looselymounted on a stud '18 on-the bracket or plate `1l, said trigger beingheld substantially horizontal by a fragile connection or cord 19 carriedfrom a hole in i-tsend to any stationary part of the-lock 5. ln the openposition the threaded shaft 9 is retracted sufficiently to clear the bari when the bolts 3 are in the retracted orunlocked position, i. e., whenthe door is unlocked and free'to open.

The operation is as follows:

Then the regular'vault lock is operated in the usual fashion, applicantsemergency7 lock is unaffected and reina-ins open because the cord 19- isattached to a stationary part ofthe lock and therefore is not disturbed.Should an attempt be made to force the regular lock or remove same byany-irregular means, such as drilling or burning around it andreinovingthe same entirely, or prying the saine out or driving it in,the fragile cord 1.9 will be broken, releasing the trigger 17 whichallows the weight 6 to drop, unw'inding the cord 8 from the reel 7,thereby revolving said reel on the threaded shaft 9, projecting saidthreaded shaft outwards against the bar 4, thereby temporarily lockingthe entire door mechanism against any possible manipulation from theoutside. To

enable the rightful owner of the vault orsafe to gain admittance afteran attempt at forcing entrance, a record of the exact position of thereel 7 'should vbe made at the time of installation so that by measuringfrom the edges of the door on the outside a hole canl be drilled to4allow reverse rotation "w of the various parts of the vdevice willreadily suggest themselves, and'I therefore do notipurposelimitingmyself Iotherwise than necessitated by the `priorI art.

leclaim as my invention:

l. The combination with vault doors and' the like, including the'lockstherefor, of

'an automatic safety lock, consisting of .-a

bracket, an adjustable-tube fastenedlthereto, an extensible shaftadaptedto yeng-age with the locking means ofsaidv doors, when inlockedposi-tioma vileXible means, a-reel adapted to have said Vflexiblemeans wound thereon, a weight attached to said flexible means, saidreelarranged to extend said shaft when the weight is released,and means forreleasing said weight when the regular lock is tampered with. l

2. in a deviceof thejclass described,` a door, aframeon lthe-inside ofsaid door, a lock for the doorinclu-ding bolts, angemergency lock, abracket associated with the door,fmea-ns associated withthe bracket togrip one side ofthe door frame, an adjustable tube faste-inedito saidbracket tospan across and grip another part of said door frame, meansfor advancing an extension of said tubeto-engage the doorvbolts when in=a locked position, and means for operating said-emergency lock when theregular lock is abused.

ln anV emergency lock of the class described,la threaded shaft, arotatable nut thereon adapted to project the shaft, a flexible cordwound upon said nut and a weightattached-to said cord adapted to'rotatesaid nut.

4. .ln a device of the class described, the combination ofa releasableweight, means normally supporting the same, a nut` rotated by therelease of said weight, and aV locking bar advanced by the rotationofsaid nut.

5. ln an emergency lock of the class described the combination of areleasable weight, means normally supporting the same, means rotated bythe release of said Weight,

v1,551,580 i p 3 points in the extremities of the lock, and tation ofsaid means. eXtensible means on said 100k adapted to 6. In combinationWith an emergency force said points into the material of the 10 'lock ofthe Class described, gripping means frames on the door. v 5 adapted tohold said lock in position be- In testimony whereof I have hereunto ytween the frames attached adjacent the subscribed my'name. Y edges ofthe door, consisting of hardened and a non-rotating bar advanced by thero- ALFRED J. MACY.

Certificate of Correction,

It is hereby certified that the name ot the assignee in Letters PatentNo. 1,551,580, granted September 1, 1925, upon the application of AlfredJ. Macy, of Chicago, Illinois, for an improvement in Automatic SafetyLocks for Vault and Safe Doors, Was erroneously written and printed asProt Tex Laboratories, Ine, Whereas said name should have been writtenand printed as Pro-Tom Laboratorios, Inc., as shown by the records ofassignments in this ofice; and that the said Letters Patent should beread with this correction therein that the same may Conform to therecord of the oase in the Patent Ofce.

Signed and sealed this 13th day of October, A. D. 1925.

[SEAL] KARL FENNING,

Acting Commissioner of Patents.

